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FFmpeg 5.1.6
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#include <stddef.h>Go to the source code of this file.
Macros | |
| #define | AV_CPU_FLAG_FORCE 0x80000000 /* force usage of selected flags (OR) */ |
| #define | AV_CPU_FLAG_MMX 0x0001 |
| standard MMX More... | |
| #define | AV_CPU_FLAG_MMXEXT 0x0002 |
| SSE integer functions or AMD MMX ext. More... | |
| #define | AV_CPU_FLAG_MMX2 0x0002 |
| SSE integer functions or AMD MMX ext. More... | |
| #define | AV_CPU_FLAG_3DNOW 0x0004 |
| AMD 3DNOW. More... | |
| #define | AV_CPU_FLAG_SSE 0x0008 |
| SSE functions. More... | |
| #define | AV_CPU_FLAG_SSE2 0x0010 |
| PIV SSE2 functions. More... | |
| #define | AV_CPU_FLAG_SSE2SLOW 0x40000000 |
| SSE2 supported, but usually not faster than regular MMX/SSE (e.g. More... | |
| #define | AV_CPU_FLAG_3DNOWEXT 0x0020 |
| AMD 3DNowExt. More... | |
| #define | AV_CPU_FLAG_SSE3 0x0040 |
| Prescott SSE3 functions. More... | |
| #define | AV_CPU_FLAG_SSE3SLOW 0x20000000 |
| SSE3 supported, but usually not faster than regular MMX/SSE (e.g. More... | |
| #define | AV_CPU_FLAG_SSSE3 0x0080 |
| Conroe SSSE3 functions. More... | |
| #define | AV_CPU_FLAG_SSSE3SLOW 0x4000000 |
| SSSE3 supported, but usually not faster. More... | |
| #define | AV_CPU_FLAG_ATOM 0x10000000 |
| Atom processor, some SSSE3 instructions are slower. More... | |
| #define | AV_CPU_FLAG_SSE4 0x0100 |
| Penryn SSE4.1 functions. More... | |
| #define | AV_CPU_FLAG_SSE42 0x0200 |
| Nehalem SSE4.2 functions. More... | |
| #define | AV_CPU_FLAG_AESNI 0x80000 |
| Advanced Encryption Standard functions. More... | |
| #define | AV_CPU_FLAG_AVX 0x4000 |
| AVX functions: requires OS support even if YMM registers aren't used. More... | |
| #define | AV_CPU_FLAG_AVXSLOW 0x8000000 |
| AVX supported, but slow when using YMM registers (e.g. Bulldozer) More... | |
| #define | AV_CPU_FLAG_XOP 0x0400 |
| Bulldozer XOP functions. More... | |
| #define | AV_CPU_FLAG_FMA4 0x0800 |
| Bulldozer FMA4 functions. More... | |
| #define | AV_CPU_FLAG_CMOV 0x1000 |
| supports cmov instruction More... | |
| #define | AV_CPU_FLAG_AVX2 0x8000 |
| AVX2 functions: requires OS support even if YMM registers aren't used. More... | |
| #define | AV_CPU_FLAG_FMA3 0x10000 |
| Haswell FMA3 functions. More... | |
| #define | AV_CPU_FLAG_BMI1 0x20000 |
| Bit Manipulation Instruction Set 1. More... | |
| #define | AV_CPU_FLAG_BMI2 0x40000 |
| Bit Manipulation Instruction Set 2. More... | |
| #define | AV_CPU_FLAG_AVX512 0x100000 |
| AVX-512 functions: requires OS support even if YMM/ZMM registers aren't used. More... | |
| #define | AV_CPU_FLAG_AVX512ICL 0x200000 |
| F/CD/BW/DQ/VL/VNNI/IFMA/VBMI/VBMI2/VPOPCNTDQ/BITALG/GFNI/VAES/VPCLMULQDQ. More... | |
| #define | AV_CPU_FLAG_SLOW_GATHER 0x2000000 |
| CPU has slow gathers. More... | |
| #define | AV_CPU_FLAG_ALTIVEC 0x0001 |
| standard More... | |
| #define | AV_CPU_FLAG_VSX 0x0002 |
| ISA 2.06. More... | |
| #define | AV_CPU_FLAG_POWER8 0x0004 |
| ISA 2.07. More... | |
| #define | AV_CPU_FLAG_ARMV5TE (1 << 0) |
| #define | AV_CPU_FLAG_ARMV6 (1 << 1) |
| #define | AV_CPU_FLAG_ARMV6T2 (1 << 2) |
| #define | AV_CPU_FLAG_VFP (1 << 3) |
| #define | AV_CPU_FLAG_VFPV3 (1 << 4) |
| #define | AV_CPU_FLAG_NEON (1 << 5) |
| #define | AV_CPU_FLAG_ARMV8 (1 << 6) |
| #define | AV_CPU_FLAG_VFP_VM (1 << 7) |
| VFPv2 vector mode, deprecated in ARMv7-A and unavailable in various CPUs implementations. More... | |
| #define | AV_CPU_FLAG_SETEND (1 <<16) |
| #define | AV_CPU_FLAG_MMI (1 << 0) |
| #define | AV_CPU_FLAG_MSA (1 << 1) |
| #define | AV_CPU_FLAG_LSX (1 << 0) |
| #define | AV_CPU_FLAG_LASX (1 << 1) |
Functions | |
| int | av_get_cpu_flags (void) |
| Return the flags which specify extensions supported by the CPU. More... | |
| void | av_force_cpu_flags (int flags) |
| Disables cpu detection and forces the specified flags. More... | |
| int | av_parse_cpu_caps (unsigned *flags, const char *s) |
| Parse CPU caps from a string and update the given AV_CPU_* flags based on that. More... | |
| int | av_cpu_count (void) |
| void | av_cpu_force_count (int count) |
| Overrides cpu count detection and forces the specified count. More... | |
| size_t | av_cpu_max_align (void) |
| Get the maximum data alignment that may be required by FFmpeg. More... | |
| #define AV_CPU_FLAG_FORCE 0x80000000 /* force usage of selected flags (OR) */ |
| #define AV_CPU_FLAG_MMXEXT 0x0002 |
| #define AV_CPU_FLAG_MMX2 0x0002 |
| #define AV_CPU_FLAG_SSE2SLOW 0x40000000 |
| #define AV_CPU_FLAG_SSE3SLOW 0x20000000 |
| #define AV_CPU_FLAG_SSSE3SLOW 0x4000000 |
| #define AV_CPU_FLAG_ATOM 0x10000000 |
| #define AV_CPU_FLAG_AESNI 0x80000 |
| #define AV_CPU_FLAG_AVX 0x4000 |
| #define AV_CPU_FLAG_AVXSLOW 0x8000000 |
| #define AV_CPU_FLAG_AVX2 0x8000 |
| #define AV_CPU_FLAG_BMI1 0x20000 |
| #define AV_CPU_FLAG_BMI2 0x40000 |
| #define AV_CPU_FLAG_AVX512 0x100000 |
| #define AV_CPU_FLAG_AVX512ICL 0x200000 |
| #define AV_CPU_FLAG_SLOW_GATHER 0x2000000 |
| #define AV_CPU_FLAG_VFP_VM (1 << 7) |
| int av_get_cpu_flags | ( | void | ) |
Return the flags which specify extensions supported by the CPU.
The returned value is affected by av_force_cpu_flags() if that was used before. So av_get_cpu_flags() can easily be used in an application to detect the enabled cpu flags.
| void av_force_cpu_flags | ( | int | flags | ) |
Disables cpu detection and forces the specified flags.
-1 is a special case that disables forcing of specific flags.
| int av_parse_cpu_caps | ( | unsigned * | flags, |
| const char * | s | ||
| ) |
Parse CPU caps from a string and update the given AV_CPU_* flags based on that.
| int av_cpu_count | ( | void | ) |
| void av_cpu_force_count | ( | int | count | ) |
Overrides cpu count detection and forces the specified count.
Count < 1 disables forcing of specific count.
| size_t av_cpu_max_align | ( | void | ) |
Get the maximum data alignment that may be required by FFmpeg.
Note that this is affected by the build configuration and the CPU flags mask, so e.g. if the CPU supports AVX, but libavutil has been built with –disable-avx or the AV_CPU_FLAG_AVX flag has been disabled through av_set_cpu_flags_mask(), then this function will behave as if AVX is not present.
1.9.4